Maintenance; Lubrication; External Silicagel Cartridge; Inspection And Repair - ITRON MZ 002-099-4115 Manual De Instrucciones

cement may differ from that during
normal meter operations.
• The meter shall not be exposed to fla-
mes, ionising radiation, and ultrasound.
• Pulse values and maximum frequen-
cies are given in Annex 1. Electrical
characteristics and wiring of the socket
are given in Annex 4. The wiring of the
transmitters is written on the name pla-
te of the meter.

5 Maintenance

When properly installed and put into ser-
vice, the MZ need no particular attention
and will provide you with many years of
satisfactory service.

5.1 Lubrication

Meters equipped with an oil pump have to
be periodically lubricated. Oil is delivered
with the meter. Specific oil has to be used,
for example
• Aeroshell fluid 12 MIL6085A
• Isoflex PDP38 (Klüber)
• Anderol 401D (Mobil Oil)
• Univis P38 (Shell)
Quantity of oil to be filled:
a) On commissioning to fill the volume
between the pump and the bearings
DN Oil vol. (cm
50/80
100
150/200
≥ 250
6
3
) Push
4 20
5 25
6 30
7 35
b) In Service
DN Oil vol. (cm
50/80
100
150/200
≥ 250
c) Recommended lubrication periodicity
Application
Dry gas, no dust
Gas comprising
light condensates
and little dust
Gas with high
percentage
of condensates
and dust.
BIOGAS
applications

5.2 External silicagel cartridge

The meter can be equipped with an ex-
ternal silicagel cartridge for installation in
severe environment conditions. The car-
tridge has to be replaced when its colour
has changed. To replace the cartridge,
unscrew the old cartridge, remove the
protective plug of the new cartridge and
screw it into the totaliser.

5.3 Inspection and repair

It is possible to check the good functio-
ning of the MZ by applying a spin test. This
test will give information about eventual
friction in the turbine ball bearings.
The test has to be conducted as follow:
• Accelerate the turbine wheel around
30 to 50% of Qmax then to measure
the time until the turbine wheel stops.
3
) Push
0,5 2-3
0,8 4
1,0 5
1,2 6
Lubrication periodicity
6 months
Monthly
Weekly